2. 外语
  3. The reason why birds don’t get lost on long flight ______. The experiment with the dove indicated that ______.

The reason why birds don’t get lost on long flight ______. The experiment with the dove indicated that ______.

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问题 The reason why birds don’t get lost on long flight ______.
The experiment with the dove indicated that ______.
选项 A、birds can fly in the same direction as that taken by their cousins
B、a bird that has been caged will not fly long distances
C、some birds seem to follow the stars when they fly at night
D、a bird having spent its lifetime in a cage has to be taught how to navigate
答案C
解析
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